v0.5.1

• Curve.values now returns a 1D array for a 1D curve.
• Added Project.basis_range to provide the min and max of all curves in the project.
• Added a user guide page for Project.
• Fixed bug #202 with curve indexing.
• Fixed bug #206 that prevented quality tests from running on aliased curves.
• Fixed bug #207 that was causing the quality table not to render correctly in some situations.